201224720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1979}}^1$

素因数の和:2064

約数の個数: 80

約数和(自身を含む): 494968320

約数和(自身を除く): 293743600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 41, 62, 80, 82, 124, 155, 164, 205, 248, 310, 328, 410, 496, 620, 656, 820, 1240, 1271, 1640, 1979, 2480, 2542, 3280, 3958, 5084, 6355, 7916, 9895, 10168, 12710, 15832, 19790, 20336, 25420, 31664, 39580, 50840, 61349, 79160, 81139, 101680, 122698, 158320, 162278, 245396, 306745, 324556, 405695, 490792, 613490, 649112, 811390, 981584, 1226980, 1298224, 1622780, 2453960, 2515309, 3245560, 4907920, 5030618, 6491120, 10061236, 12576545, 20122472, 25153090, 40244944, 50306180, 100612360, 201224720]

約数ペア:

[(1, 201224720), (2, 100612360), (4, 50306180), (5, 40244944), (8, 25153090), (10, 20122472), (16, 12576545), (20, 10061236), (31, 6491120), (40, 5030618), (41, 4907920), (62, 3245560), (80, 2515309), (82, 2453960), (124, 1622780), (155, 1298224), (164, 1226980), (205, 981584), (248, 811390), (310, 649112), (328, 613490), (410, 490792), (496, 405695), (620, 324556), (656, 306745), (820, 245396), (1240, 162278), (1271, 158320), (1640, 122698), (1979, 101680), (2480, 81139), (2542, 79160), (3280, 61349), (3958, 50840), (5084, 39580), (6355, 31664), (7916, 25420), (9895, 20336), (10168, 19790), (12710, 15832)]