201220100

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{983}}^1$

素因数の和:1109

約数の個数: 72

約数和(自身を含む): 461220480

約数和(自身を除く): 260000380

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 89, 92, 100, 115, 178, 230, 356, 445, 460, 575, 890, 983, 1150, 1780, 1966, 2047, 2225, 2300, 3932, 4094, 4450, 4915, 8188, 8900, 9830, 10235, 19660, 20470, 22609, 24575, 40940, 45218, 49150, 51175, 87487, 90436, 98300, 102350, 113045, 174974, 204700, 226090, 349948, 437435, 452180, 565225, 874870, 1130450, 1749740, 2012201, 2187175, 2260900, 4024402, 4374350, 8048804, 8748700, 10061005, 20122010, 40244020, 50305025, 100610050, 201220100]

約数ペア:

[(1, 201220100), (2, 100610050), (4, 50305025), (5, 40244020), (10, 20122010), (20, 10061005), (23, 8748700), (25, 8048804), (46, 4374350), (50, 4024402), (89, 2260900), (92, 2187175), (100, 2012201), (115, 1749740), (178, 1130450), (230, 874870), (356, 565225), (445, 452180), (460, 437435), (575, 349948), (890, 226090), (983, 204700), (1150, 174974), (1780, 113045), (1966, 102350), (2047, 98300), (2225, 90436), (2300, 87487), (3932, 51175), (4094, 49150), (4450, 45218), (4915, 40940), (8188, 24575), (8900, 22609), (9830, 20470), (10235, 19660)]