205129870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{911}}^1$

素因数の和:1041

約数の個数: 64

約数和(自身を含む): 425502720

約数和(自身を除く): 220372850

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 89, 110, 115, 178, 230, 253, 445, 506, 890, 911, 979, 1265, 1822, 1958, 2047, 2530, 4094, 4555, 4895, 9110, 9790, 10021, 10235, 20042, 20470, 20953, 22517, 41906, 45034, 50105, 81079, 100210, 104765, 112585, 162158, 209530, 225170, 230483, 405395, 460966, 810790, 891869, 1152415, 1783738, 1864817, 2304830, 3729634, 4459345, 8918690, 9324085, 18648170, 20512987, 41025974, 102564935, 205129870]

約数ペア:

[(1, 205129870), (2, 102564935), (5, 41025974), (10, 20512987), (11, 18648170), (22, 9324085), (23, 8918690), (46, 4459345), (55, 3729634), (89, 2304830), (110, 1864817), (115, 1783738), (178, 1152415), (230, 891869), (253, 810790), (445, 460966), (506, 405395), (890, 230483), (911, 225170), (979, 209530), (1265, 162158), (1822, 112585), (1958, 104765), (2047, 100210), (2530, 81079), (4094, 50105), (4555, 45034), (4895, 41906), (9110, 22517), (9790, 20953), (10021, 20470), (10235, 20042)]