19993428

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{359}}^1$

素因数の和:406

約数の個数: 144

約数和(自身を含む): 66044160

約数和(自身を除く): 46050732

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 17, 18, 21, 26, 28, 34, 36, 39, 42, 51, 52, 63, 68, 78, 84, 91, 102, 117, 119, 126, 153, 156, 182, 204, 221, 234, 238, 252, 273, 306, 357, 359, 364, 442, 468, 476, 546, 612, 663, 714, 718, 819, 884, 1071, 1077, 1092, 1326, 1428, 1436, 1547, 1638, 1989, 2142, 2154, 2513, 2652, 3094, 3231, 3276, 3978, 4284, 4308, 4641, 4667, 5026, 6103, 6188, 6462, 7539, 7956, 9282, 9334, 10052, 12206, 12924, 13923, 14001, 15078, 18309, 18564, 18668, 22617, 24412, 27846, 28002, 30156, 32669, 36618, 42003, 42721, 45234, 54927, 55692, 56004, 65338, 73236, 79339, 84006, 85442, 90468, 98007, 109854, 128163, 130676, 158678, 168012, 170884, 196014, 219708, 238017, 256326, 294021, 317356, 384489, 392028, 476034, 512652, 555373, 588042, 714051, 768978, 952068, 1110746, 1176084, 1428102, 1537956, 1666119, 2221492, 2856204, 3332238, 4998357, 6664476, 9996714, 19993428]

約数ペア:

[(1, 19993428), (2, 9996714), (3, 6664476), (4, 4998357), (6, 3332238), (7, 2856204), (9, 2221492), (12, 1666119), (13, 1537956), (14, 1428102), (17, 1176084), (18, 1110746), (21, 952068), (26, 768978), (28, 714051), (34, 588042), (36, 555373), (39, 512652), (42, 476034), (51, 392028), (52, 384489), (63, 317356), (68, 294021), (78, 256326), (84, 238017), (91, 219708), (102, 196014), (117, 170884), (119, 168012), (126, 158678), (153, 130676), (156, 128163), (182, 109854), (204, 98007), (221, 90468), (234, 85442), (238, 84006), (252, 79339), (273, 73236), (306, 65338), (357, 56004), (359, 55692), (364, 54927), (442, 45234), (468, 42721), (476, 42003), (546, 36618), (612, 32669), (663, 30156), (714, 28002), (718, 27846), (819, 24412), (884, 22617), (1071, 18668), (1077, 18564), (1092, 18309), (1326, 15078), (1428, 14001), (1436, 13923), (1547, 12924), (1638, 12206), (1989, 10052), (2142, 9334), (2154, 9282), (2513, 7956), (2652, 7539), (3094, 6462), (3231, 6188), (3276, 6103), (3978, 5026), (4284, 4667), (4308, 4641)]