20972250

素因数分解:

$2^1\times 3^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{239}}^1$

素因数の和:278

約数の個数: 128

約数和(自身を含む): 62899200

約数和(自身を除く): 41926950

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 25, 26, 27, 30, 39, 45, 50, 54, 65, 75, 78, 90, 117, 125, 130, 135, 150, 195, 225, 234, 239, 250, 270, 325, 351, 375, 390, 450, 478, 585, 650, 675, 702, 717, 750, 975, 1125, 1170, 1195, 1350, 1434, 1625, 1755, 1950, 2151, 2250, 2390, 2925, 3107, 3250, 3375, 3510, 3585, 4302, 4875, 5850, 5975, 6214, 6453, 6750, 7170, 8775, 9321, 9750, 10755, 11950, 12906, 14625, 15535, 17550, 17925, 18642, 21510, 27963, 29250, 29875, 31070, 32265, 35850, 43875, 46605, 53775, 55926, 59750, 64530, 77675, 83889, 87750, 89625, 93210, 107550, 139815, 155350, 161325, 167778, 179250, 233025, 268875, 279630, 322650, 388375, 419445, 466050, 537750, 699075, 776750, 806625, 838890, 1165125, 1398150, 1613250, 2097225, 2330250, 3495375, 4194450, 6990750, 10486125, 20972250]

約数ペア:

[(1, 20972250), (2, 10486125), (3, 6990750), (5, 4194450), (6, 3495375), (9, 2330250), (10, 2097225), (13, 1613250), (15, 1398150), (18, 1165125), (25, 838890), (26, 806625), (27, 776750), (30, 699075), (39, 537750), (45, 466050), (50, 419445), (54, 388375), (65, 322650), (75, 279630), (78, 268875), (90, 233025), (117, 179250), (125, 167778), (130, 161325), (135, 155350), (150, 139815), (195, 107550), (225, 93210), (234, 89625), (239, 87750), (250, 83889), (270, 77675), (325, 64530), (351, 59750), (375, 55926), (390, 53775), (450, 46605), (478, 43875), (585, 35850), (650, 32265), (675, 31070), (702, 29875), (717, 29250), (750, 27963), (975, 21510), (1125, 18642), (1170, 17925), (1195, 17550), (1350, 15535), (1434, 14625), (1625, 12906), (1755, 11950), (1950, 10755), (2151, 9750), (2250, 9321), (2390, 8775), (2925, 7170), (3107, 6750), (3250, 6453), (3375, 6214), (3510, 5975), (3585, 5850), (4302, 4875)]