20445516

素因数分解:

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

素因数の和:188

約数の個数: 108

約数和(自身を含む): 64423632

約数和(自身を除く): 43978116

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 79, 84, 91, 117, 126, 156, 158, 182, 234, 237, 252, 273, 316, 364, 468, 474, 546, 553, 711, 819, 948, 1027, 1092, 1106, 1422, 1638, 1659, 2054, 2212, 2844, 3081, 3276, 3318, 4108, 4977, 6162, 6241, 6636, 7189, 9243, 9954, 12324, 12482, 14378, 18486, 18723, 19908, 21567, 24964, 28756, 36972, 37446, 43134, 43687, 56169, 64701, 74892, 81133, 86268, 87374, 112338, 129402, 131061, 162266, 174748, 224676, 243399, 258804, 262122, 324532, 393183, 486798, 524244, 567931, 730197, 786366, 973596, 1135862, 1460394, 1572732, 1703793, 2271724, 2920788, 3407586, 5111379, 6815172, 10222758, 20445516]

約数ペア:

[(1, 20445516), (2, 10222758), (3, 6815172), (4, 5111379), (6, 3407586), (7, 2920788), (9, 2271724), (12, 1703793), (13, 1572732), (14, 1460394), (18, 1135862), (21, 973596), (26, 786366), (28, 730197), (36, 567931), (39, 524244), (42, 486798), (52, 393183), (63, 324532), (78, 262122), (79, 258804), (84, 243399), (91, 224676), (117, 174748), (126, 162266), (156, 131061), (158, 129402), (182, 112338), (234, 87374), (237, 86268), (252, 81133), (273, 74892), (316, 64701), (364, 56169), (468, 43687), (474, 43134), (546, 37446), (553, 36972), (711, 28756), (819, 24964), (948, 21567), (1027, 19908), (1092, 18723), (1106, 18486), (1422, 14378), (1638, 12482), (1659, 12324), (2054, 9954), (2212, 9243), (2844, 7189), (3081, 6636), (3276, 6241), (3318, 6162), (4108, 4977)]