28678950

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{101}}^1\times {\mathrm{631}}^1$

素因数の和:750

約数の個数: 72

約数和(自身を含む): 77936976

約数和(自身を除く): 49258026

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 101, 150, 202, 225, 303, 450, 505, 606, 631, 909, 1010, 1262, 1515, 1818, 1893, 2525, 3030, 3155, 3786, 4545, 5050, 5679, 6310, 7575, 9090, 9465, 11358, 15150, 15775, 18930, 22725, 28395, 31550, 45450, 47325, 56790, 63731, 94650, 127462, 141975, 191193, 283950, 318655, 382386, 573579, 637310, 955965, 1147158, 1593275, 1911930, 2867895, 3186550, 4779825, 5735790, 9559650, 14339475, 28678950]

約数ペア:

[(1, 28678950), (2, 14339475), (3, 9559650), (5, 5735790), (6, 4779825), (9, 3186550), (10, 2867895), (15, 1911930), (18, 1593275), (25, 1147158), (30, 955965), (45, 637310), (50, 573579), (75, 382386), (90, 318655), (101, 283950), (150, 191193), (202, 141975), (225, 127462), (303, 94650), (450, 63731), (505, 56790), (606, 47325), (631, 45450), (909, 31550), (1010, 28395), (1262, 22725), (1515, 18930), (1818, 15775), (1893, 15150), (2525, 11358), (3030, 9465), (3155, 9090), (3786, 7575), (4545, 6310), (5050, 5679)]