217660690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{661}}^1$

素因数の和:847

約数の個数: 64

約数和(自身を含む): 450424800

約数和(自身を除く): 232764110

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 149, 170, 221, 298, 442, 661, 745, 1105, 1322, 1490, 1937, 2210, 2533, 3305, 3874, 5066, 6610, 8593, 9685, 11237, 12665, 17186, 19370, 22474, 25330, 32929, 42965, 56185, 65858, 85930, 98489, 112370, 146081, 164645, 196978, 292162, 329290, 492445, 730405, 984890, 1280357, 1460810, 1674313, 2560714, 3348626, 6401785, 8371565, 12803570, 16743130, 21766069, 43532138, 108830345, 217660690]

約数ペア:

[(1, 217660690), (2, 108830345), (5, 43532138), (10, 21766069), (13, 16743130), (17, 12803570), (26, 8371565), (34, 6401785), (65, 3348626), (85, 2560714), (130, 1674313), (149, 1460810), (170, 1280357), (221, 984890), (298, 730405), (442, 492445), (661, 329290), (745, 292162), (1105, 196978), (1322, 164645), (1490, 146081), (1937, 112370), (2210, 98489), (2533, 85930), (3305, 65858), (3874, 56185), (5066, 42965), (6610, 32929), (8593, 25330), (9685, 22474), (11237, 19370), (12665, 17186)]