20531410

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 41990400

約数和(自身を除く): 21458990

約数列:

[1, 2, 5, 10, 17, 23, 34, 46, 59, 85, 89, 115, 118, 170, 178, 230, 295, 391, 445, 590, 782, 890, 1003, 1357, 1513, 1955, 2006, 2047, 2714, 3026, 3910, 4094, 5015, 5251, 6785, 7565, 10030, 10235, 10502, 13570, 15130, 20470, 23069, 26255, 34799, 46138, 52510, 69598, 89267, 115345, 120773, 173995, 178534, 230690, 241546, 347990, 446335, 603865, 892670, 1207730, 2053141, 4106282, 10265705, 20531410]

約数ペア:

[(1, 20531410), (2, 10265705), (5, 4106282), (10, 2053141), (17, 1207730), (23, 892670), (34, 603865), (46, 446335), (59, 347990), (85, 241546), (89, 230690), (115, 178534), (118, 173995), (170, 120773), (178, 115345), (230, 89267), (295, 69598), (391, 52510), (445, 46138), (590, 34799), (782, 26255), (890, 23069), (1003, 20470), (1357, 15130), (1513, 13570), (1955, 10502), (2006, 10235), (2047, 10030), (2714, 7565), (3026, 6785), (3910, 5251), (4094, 5015)]