18989300

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{283}}^1$

素因数の和:369

約数の個数: 72

約数和(自身を含む): 45851232

約数和(自身を除く): 26861932

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 61, 100, 110, 122, 220, 244, 275, 283, 305, 550, 566, 610, 671, 1100, 1132, 1220, 1342, 1415, 1525, 2684, 2830, 3050, 3113, 3355, 5660, 6100, 6226, 6710, 7075, 12452, 13420, 14150, 15565, 16775, 17263, 28300, 31130, 33550, 34526, 62260, 67100, 69052, 77825, 86315, 155650, 172630, 189893, 311300, 345260, 379786, 431575, 759572, 863150, 949465, 1726300, 1898930, 3797860, 4747325, 9494650, 18989300]

約数ペア:

[(1, 18989300), (2, 9494650), (4, 4747325), (5, 3797860), (10, 1898930), (11, 1726300), (20, 949465), (22, 863150), (25, 759572), (44, 431575), (50, 379786), (55, 345260), (61, 311300), (100, 189893), (110, 172630), (122, 155650), (220, 86315), (244, 77825), (275, 69052), (283, 67100), (305, 62260), (550, 34526), (566, 33550), (610, 31130), (671, 28300), (1100, 17263), (1132, 16775), (1220, 15565), (1342, 14150), (1415, 13420), (1525, 12452), (2684, 7075), (2830, 6710), (3050, 6226), (3113, 6100), (3355, 5660)]