201909850

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:292

約数の個数: 72

約数和(自身を含む): 405995220

約数和(自身を除く): 204085370

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 89, 157, 170, 178, 289, 314, 425, 445, 578, 785, 850, 890, 1445, 1513, 1570, 2225, 2669, 2890, 3026, 3925, 4450, 5338, 7225, 7565, 7850, 13345, 13973, 14450, 15130, 25721, 26690, 27946, 37825, 45373, 51442, 66725, 69865, 75650, 90746, 128605, 133450, 139730, 226865, 237541, 257210, 349325, 453730, 475082, 643025, 698650, 1134325, 1187705, 1286050, 2268650, 2375410, 4038197, 5938525, 8076394, 11877050, 20190985, 40381970, 100954925, 201909850]

約数ペア:

[(1, 201909850), (2, 100954925), (5, 40381970), (10, 20190985), (17, 11877050), (25, 8076394), (34, 5938525), (50, 4038197), (85, 2375410), (89, 2268650), (157, 1286050), (170, 1187705), (178, 1134325), (289, 698650), (314, 643025), (425, 475082), (445, 453730), (578, 349325), (785, 257210), (850, 237541), (890, 226865), (1445, 139730), (1513, 133450), (1570, 128605), (2225, 90746), (2669, 75650), (2890, 69865), (3026, 66725), (3925, 51442), (4450, 45373), (5338, 37825), (7225, 27946), (7565, 26690), (7850, 25721), (13345, 15130), (13973, 14450)]