638465835

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{349}}^1$

素因数の和:521

約数の個数: 96

約数和(自身を含む): 1264032000

約数和(自身を除く): 625566165

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 131, 133, 147, 245, 285, 349, 393, 399, 655, 665, 735, 917, 931, 1047, 1745, 1965, 1995, 2443, 2489, 2751, 2793, 4585, 4655, 5235, 6419, 6631, 7329, 7467, 12215, 12445, 13755, 13965, 17101, 17423, 19257, 19893, 32095, 33155, 36645, 37335, 45719, 46417, 51303, 52269, 85505, 87115, 96285, 99465, 121961, 137157, 139251, 228595, 232085, 256515, 261345, 320033, 324919, 365883, 609805, 685785, 696255, 868661, 960099, 974757, 1600165, 1624595, 1829415, 2240231, 2605983, 4343305, 4800495, 4873785, 6080627, 6720693, 11201155, 13029915, 18241881, 30403135, 33603465, 42564389, 91209405, 127693167, 212821945, 638465835]

約数ペア:

[(1, 638465835), (3, 212821945), (5, 127693167), (7, 91209405), (15, 42564389), (19, 33603465), (21, 30403135), (35, 18241881), (49, 13029915), (57, 11201155), (95, 6720693), (105, 6080627), (131, 4873785), (133, 4800495), (147, 4343305), (245, 2605983), (285, 2240231), (349, 1829415), (393, 1624595), (399, 1600165), (655, 974757), (665, 960099), (735, 868661), (917, 696255), (931, 685785), (1047, 609805), (1745, 365883), (1965, 324919), (1995, 320033), (2443, 261345), (2489, 256515), (2751, 232085), (2793, 228595), (4585, 139251), (4655, 137157), (5235, 121961), (6419, 99465), (6631, 96285), (7329, 87115), (7467, 85505), (12215, 52269), (12445, 51303), (13755, 46417), (13965, 45719), (17101, 37335), (17423, 36645), (19257, 33155), (19893, 32095)]