20809903816

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:527

約数の個数: 128

約数和(自身を含む): 43545600000

約数和(自身を除く): 22735696184

約数列:

[1, 2, 4, 8, 13, 26, 52, 79, 89, 104, 149, 158, 178, 191, 298, 316, 356, 382, 596, 632, 712, 764, 1027, 1157, 1192, 1528, 1937, 2054, 2314, 2483, 3874, 4108, 4628, 4966, 7031, 7748, 8216, 9256, 9932, 11771, 13261, 14062, 15089, 15496, 16999, 19864, 23542, 26522, 28124, 28459, 30178, 33998, 47084, 53044, 56248, 56918, 60356, 67996, 91403, 94168, 106088, 113836, 120712, 135992, 153023, 172393, 182806, 196157, 220987, 227672, 306046, 344786, 365612, 369967, 392314, 441974, 612092, 689572, 731224, 739934, 784628, 883948, 1047619, 1224184, 1342921, 1379144, 1479868, 1569256, 1767896, 2095238, 2248261, 2532851, 2685842, 2959736, 4190476, 4496522, 5065702, 5371684, 8380952, 8993044, 10131404, 10743368, 13619047, 17457973, 17986088, 20262808, 27238094, 29227393, 32927063, 34915946, 54476188, 58454786, 65854126, 69831892, 108952376, 116909572, 131708252, 139663784, 200095229, 233819144, 263416504, 400190458, 800380916, 1600761832, 2601237977, 5202475954, 10404951908, 20809903816]

約数ペア:

[(1, 20809903816), (2, 10404951908), (4, 5202475954), (8, 2601237977), (13, 1600761832), (26, 800380916), (52, 400190458), (79, 263416504), (89, 233819144), (104, 200095229), (149, 139663784), (158, 131708252), (178, 116909572), (191, 108952376), (298, 69831892), (316, 65854126), (356, 58454786), (382, 54476188), (596, 34915946), (632, 32927063), (712, 29227393), (764, 27238094), (1027, 20262808), (1157, 17986088), (1192, 17457973), (1528, 13619047), (1937, 10743368), (2054, 10131404), (2314, 8993044), (2483, 8380952), (3874, 5371684), (4108, 5065702), (4628, 4496522), (4966, 4190476), (7031, 2959736), (7748, 2685842), (8216, 2532851), (9256, 2248261), (9932, 2095238), (11771, 1767896), (13261, 1569256), (14062, 1479868), (15089, 1379144), (15496, 1342921), (16999, 1224184), (19864, 1047619), (23542, 883948), (26522, 784628), (28124, 739934), (28459, 731224), (30178, 689572), (33998, 612092), (47084, 441974), (53044, 392314), (56248, 369967), (56918, 365612), (60356, 344786), (67996, 306046), (91403, 227672), (94168, 220987), (106088, 196157), (113836, 182806), (120712, 172393), (135992, 153023)]