21221928

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:152

約数の個数: 192

約数和(自身を含む): 73382400

約数和(自身を除く): 52160472

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 18, 21, 24, 26, 28, 36, 39, 41, 42, 52, 56, 63, 72, 78, 79, 82, 84, 91, 104, 117, 123, 126, 156, 158, 164, 168, 182, 234, 237, 246, 252, 273, 287, 312, 316, 328, 364, 369, 468, 474, 492, 504, 533, 546, 553, 574, 632, 711, 728, 738, 819, 861, 936, 948, 984, 1027, 1066, 1092, 1106, 1148, 1422, 1476, 1599, 1638, 1659, 1722, 1896, 2054, 2132, 2184, 2212, 2296, 2583, 2844, 2952, 3081, 3198, 3239, 3276, 3318, 3444, 3731, 4108, 4264, 4424, 4797, 4977, 5166, 5688, 6162, 6396, 6478, 6552, 6636, 6888, 7189, 7462, 8216, 9243, 9594, 9717, 9954, 10332, 11193, 12324, 12792, 12956, 13272, 14378, 14924, 18486, 19188, 19434, 19908, 20664, 21567, 22386, 22673, 24648, 25912, 28756, 29151, 29848, 33579, 36972, 38376, 38868, 39816, 42107, 43134, 44772, 45346, 57512, 58302, 64701, 67158, 68019, 73944, 77736, 84214, 86268, 89544, 90692, 116604, 126321, 129402, 134316, 136038, 168428, 172536, 181384, 204057, 233208, 252642, 258804, 268632, 272076, 294749, 336856, 378963, 408114, 505284, 517608, 544152, 589498, 757926, 816228, 884247, 1010568, 1178996, 1515852, 1632456, 1768494, 2357992, 2652741, 3031704, 3536988, 5305482, 7073976, 10610964, 21221928]

約数ペア:

[(1, 21221928), (2, 10610964), (3, 7073976), (4, 5305482), (6, 3536988), (7, 3031704), (8, 2652741), (9, 2357992), (12, 1768494), (13, 1632456), (14, 1515852), (18, 1178996), (21, 1010568), (24, 884247), (26, 816228), (28, 757926), (36, 589498), (39, 544152), (41, 517608), (42, 505284), (52, 408114), (56, 378963), (63, 336856), (72, 294749), (78, 272076), (79, 268632), (82, 258804), (84, 252642), (91, 233208), (104, 204057), (117, 181384), (123, 172536), (126, 168428), (156, 136038), (158, 134316), (164, 129402), (168, 126321), (182, 116604), (234, 90692), (237, 89544), (246, 86268), (252, 84214), (273, 77736), (287, 73944), (312, 68019), (316, 67158), (328, 64701), (364, 58302), (369, 57512), (468, 45346), (474, 44772), (492, 43134), (504, 42107), (533, 39816), (546, 38868), (553, 38376), (574, 36972), (632, 33579), (711, 29848), (728, 29151), (738, 28756), (819, 25912), (861, 24648), (936, 22673), (948, 22386), (984, 21567), (1027, 20664), (1066, 19908), (1092, 19434), (1106, 19188), (1148, 18486), (1422, 14924), (1476, 14378), (1599, 13272), (1638, 12956), (1659, 12792), (1722, 12324), (1896, 11193), (2054, 10332), (2132, 9954), (2184, 9717), (2212, 9594), (2296, 9243), (2583, 8216), (2844, 7462), (2952, 7189), (3081, 6888), (3198, 6636), (3239, 6552), (3276, 6478), (3318, 6396), (3444, 6162), (3731, 5688), (4108, 5166), (4264, 4977), (4424, 4797)]