21480732

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:192

約数の個数: 144

約数和(自身を含む): 68490240

約数和(自身を除く): 47009508

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 79, 83, 84, 91, 117, 126, 156, 158, 166, 182, 234, 237, 249, 252, 273, 316, 332, 364, 468, 474, 498, 546, 553, 581, 711, 747, 819, 948, 996, 1027, 1079, 1092, 1106, 1162, 1422, 1494, 1638, 1659, 1743, 2054, 2158, 2212, 2324, 2844, 2988, 3081, 3237, 3276, 3318, 3486, 4108, 4316, 4977, 5229, 6162, 6474, 6557, 6636, 6972, 7189, 7553, 9243, 9711, 9954, 10458, 12324, 12948, 13114, 14378, 15106, 18486, 19422, 19671, 19908, 20916, 21567, 22659, 26228, 28756, 30212, 36972, 38844, 39342, 43134, 45318, 45899, 59013, 64701, 67977, 78684, 85241, 86268, 90636, 91798, 118026, 129402, 135954, 137697, 170482, 183596, 236052, 255723, 258804, 271908, 275394, 340964, 413091, 511446, 550788, 596687, 767169, 826182, 1022892, 1193374, 1534338, 1652364, 1790061, 2386748, 3068676, 3580122, 5370183, 7160244, 10740366, 21480732]

約数ペア:

[(1, 21480732), (2, 10740366), (3, 7160244), (4, 5370183), (6, 3580122), (7, 3068676), (9, 2386748), (12, 1790061), (13, 1652364), (14, 1534338), (18, 1193374), (21, 1022892), (26, 826182), (28, 767169), (36, 596687), (39, 550788), (42, 511446), (52, 413091), (63, 340964), (78, 275394), (79, 271908), (83, 258804), (84, 255723), (91, 236052), (117, 183596), (126, 170482), (156, 137697), (158, 135954), (166, 129402), (182, 118026), (234, 91798), (237, 90636), (249, 86268), (252, 85241), (273, 78684), (316, 67977), (332, 64701), (364, 59013), (468, 45899), (474, 45318), (498, 43134), (546, 39342), (553, 38844), (581, 36972), (711, 30212), (747, 28756), (819, 26228), (948, 22659), (996, 21567), (1027, 20916), (1079, 19908), (1092, 19671), (1106, 19422), (1162, 18486), (1422, 15106), (1494, 14378), (1638, 13114), (1659, 12948), (1743, 12324), (2054, 10458), (2158, 9954), (2212, 9711), (2324, 9243), (2844, 7553), (2988, 7189), (3081, 6972), (3237, 6636), (3276, 6557), (3318, 6474), (3486, 6162), (4108, 5229), (4316, 4977)]