641567180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:347

約数の個数: 96

約数和(自身を含む): 1428840000

約数和(自身を除く): 787272820

約数列:

[1, 2, 4, 5, 10, 20, 41, 59, 82, 89, 118, 149, 164, 178, 205, 236, 295, 298, 356, 410, 445, 590, 596, 745, 820, 890, 1180, 1490, 1780, 2419, 2980, 3649, 4838, 5251, 6109, 7298, 8791, 9676, 10502, 12095, 12218, 13261, 14596, 17582, 18245, 21004, 24190, 24436, 26255, 26522, 30545, 35164, 36490, 43955, 48380, 52510, 53044, 61090, 66305, 72980, 87910, 105020, 122180, 132610, 175820, 215291, 265220, 360431, 430582, 543701, 720862, 782399, 861164, 1076455, 1087402, 1441724, 1564798, 1802155, 2152910, 2174804, 2718505, 3129596, 3604310, 3911995, 4305820, 5437010, 7208620, 7823990, 10874020, 15647980, 32078359, 64156718, 128313436, 160391795, 320783590, 641567180]

約数ペア:

[(1, 641567180), (2, 320783590), (4, 160391795), (5, 128313436), (10, 64156718), (20, 32078359), (41, 15647980), (59, 10874020), (82, 7823990), (89, 7208620), (118, 5437010), (149, 4305820), (164, 3911995), (178, 3604310), (205, 3129596), (236, 2718505), (295, 2174804), (298, 2152910), (356, 1802155), (410, 1564798), (445, 1441724), (590, 1087402), (596, 1076455), (745, 861164), (820, 782399), (890, 720862), (1180, 543701), (1490, 430582), (1780, 360431), (2419, 265220), (2980, 215291), (3649, 175820), (4838, 132610), (5251, 122180), (6109, 105020), (7298, 87910), (8791, 72980), (9676, 66305), (10502, 61090), (12095, 53044), (12218, 52510), (13261, 48380), (14596, 43955), (17582, 36490), (18245, 35164), (21004, 30545), (24190, 26522), (24436, 26255)]