21653325

素因数分解:

$3^4\times 5^2\times {\mathrm{17}}^2\times {\mathrm{37}}^1$

素因数の和:93

約数の個数: 90

約数和(自身を含む): 43759166

約数和(自身を除く): 22105841

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 37, 45, 51, 75, 81, 85, 111, 135, 153, 185, 225, 255, 289, 333, 405, 425, 459, 555, 629, 675, 765, 867, 925, 999, 1275, 1377, 1445, 1665, 1887, 2025, 2295, 2601, 2775, 2997, 3145, 3825, 4335, 4995, 5661, 6885, 7225, 7803, 8325, 9435, 10693, 11475, 13005, 14985, 15725, 16983, 21675, 23409, 24975, 28305, 32079, 34425, 39015, 47175, 50949, 53465, 65025, 74925, 84915, 96237, 117045, 141525, 160395, 195075, 254745, 267325, 288711, 424575, 481185, 585225, 801975, 866133, 1273725, 1443555, 2405925, 4330665, 7217775, 21653325]

約数ペア:

[(1, 21653325), (3, 7217775), (5, 4330665), (9, 2405925), (15, 1443555), (17, 1273725), (25, 866133), (27, 801975), (37, 585225), (45, 481185), (51, 424575), (75, 288711), (81, 267325), (85, 254745), (111, 195075), (135, 160395), (153, 141525), (185, 117045), (225, 96237), (255, 84915), (289, 74925), (333, 65025), (405, 53465), (425, 50949), (459, 47175), (555, 39015), (629, 34425), (675, 32079), (765, 28305), (867, 24975), (925, 23409), (999, 21675), (1275, 16983), (1377, 15725), (1445, 14985), (1665, 13005), (1887, 11475), (2025, 10693), (2295, 9435), (2601, 8325), (2775, 7803), (2997, 7225), (3145, 6885), (3825, 5661), (4335, 4995)]