18941780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1$

素因数の和:249

約数の個数: 96

約数和(自身を含む): 48263040

約数和(自身を除く): 29321260

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 37, 44, 52, 55, 65, 74, 110, 130, 143, 148, 179, 185, 220, 260, 286, 358, 370, 407, 481, 572, 715, 716, 740, 814, 895, 962, 1430, 1628, 1790, 1924, 1969, 2035, 2327, 2405, 2860, 3580, 3938, 4070, 4654, 4810, 5291, 6623, 7876, 8140, 9308, 9620, 9845, 10582, 11635, 13246, 19690, 21164, 23270, 25597, 26455, 26492, 33115, 39380, 46540, 51194, 52910, 66230, 72853, 86099, 102388, 105820, 127985, 132460, 145706, 172198, 255970, 291412, 344396, 364265, 430495, 511940, 728530, 860990, 947089, 1457060, 1721980, 1894178, 3788356, 4735445, 9470890, 18941780]

約数ペア:

[(1, 18941780), (2, 9470890), (4, 4735445), (5, 3788356), (10, 1894178), (11, 1721980), (13, 1457060), (20, 947089), (22, 860990), (26, 728530), (37, 511940), (44, 430495), (52, 364265), (55, 344396), (65, 291412), (74, 255970), (110, 172198), (130, 145706), (143, 132460), (148, 127985), (179, 105820), (185, 102388), (220, 86099), (260, 72853), (286, 66230), (358, 52910), (370, 51194), (407, 46540), (481, 39380), (572, 33115), (715, 26492), (716, 26455), (740, 25597), (814, 23270), (895, 21164), (962, 19690), (1430, 13246), (1628, 11635), (1790, 10582), (1924, 9845), (1969, 9620), (2035, 9308), (2327, 8140), (2405, 7876), (2860, 6623), (3580, 5291), (3938, 4810), (4070, 4654)]