20725380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{521}}^1$

素因数の和:566

約数の個数: 144

約数和(自身を含む): 71823024

約数和(自身を除く): 51097644

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 17, 18, 20, 26, 30, 34, 36, 39, 45, 51, 52, 60, 65, 68, 78, 85, 90, 102, 117, 130, 153, 156, 170, 180, 195, 204, 221, 234, 255, 260, 306, 340, 390, 442, 468, 510, 521, 585, 612, 663, 765, 780, 884, 1020, 1042, 1105, 1170, 1326, 1530, 1563, 1989, 2084, 2210, 2340, 2605, 2652, 3060, 3126, 3315, 3978, 4420, 4689, 5210, 6252, 6630, 6773, 7815, 7956, 8857, 9378, 9945, 10420, 13260, 13546, 15630, 17714, 18756, 19890, 20319, 23445, 26571, 27092, 31260, 33865, 35428, 39780, 40638, 44285, 46890, 53142, 60957, 67730, 79713, 81276, 88570, 93780, 101595, 106284, 115141, 121914, 132855, 135460, 159426, 177140, 203190, 230282, 243828, 265710, 304785, 318852, 345423, 398565, 406380, 460564, 531420, 575705, 609570, 690846, 797130, 1036269, 1151410, 1219140, 1381692, 1594260, 1727115, 2072538, 2302820, 3454230, 4145076, 5181345, 6908460, 10362690, 20725380]

約数ペア:

[(1, 20725380), (2, 10362690), (3, 6908460), (4, 5181345), (5, 4145076), (6, 3454230), (9, 2302820), (10, 2072538), (12, 1727115), (13, 1594260), (15, 1381692), (17, 1219140), (18, 1151410), (20, 1036269), (26, 797130), (30, 690846), (34, 609570), (36, 575705), (39, 531420), (45, 460564), (51, 406380), (52, 398565), (60, 345423), (65, 318852), (68, 304785), (78, 265710), (85, 243828), (90, 230282), (102, 203190), (117, 177140), (130, 159426), (153, 135460), (156, 132855), (170, 121914), (180, 115141), (195, 106284), (204, 101595), (221, 93780), (234, 88570), (255, 81276), (260, 79713), (306, 67730), (340, 60957), (390, 53142), (442, 46890), (468, 44285), (510, 40638), (521, 39780), (585, 35428), (612, 33865), (663, 31260), (765, 27092), (780, 26571), (884, 23445), (1020, 20319), (1042, 19890), (1105, 18756), (1170, 17714), (1326, 15630), (1530, 13546), (1563, 13260), (1989, 10420), (2084, 9945), (2210, 9378), (2340, 8857), (2605, 7956), (2652, 7815), (3060, 6773), (3126, 6630), (3315, 6252), (3978, 5210), (4420, 4689)]