18049900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:355

約数の個数: 72

約数和(自身を含む): 43590960

約数和(自身を除く): 25541060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 61, 100, 110, 122, 220, 244, 269, 275, 305, 538, 550, 610, 671, 1076, 1100, 1220, 1342, 1345, 1525, 2684, 2690, 2959, 3050, 3355, 5380, 5918, 6100, 6710, 6725, 11836, 13420, 13450, 14795, 16409, 16775, 26900, 29590, 32818, 33550, 59180, 65636, 67100, 73975, 82045, 147950, 164090, 180499, 295900, 328180, 360998, 410225, 721996, 820450, 902495, 1640900, 1804990, 3609980, 4512475, 9024950, 18049900]

約数ペア:

[(1, 18049900), (2, 9024950), (4, 4512475), (5, 3609980), (10, 1804990), (11, 1640900), (20, 902495), (22, 820450), (25, 721996), (44, 410225), (50, 360998), (55, 328180), (61, 295900), (100, 180499), (110, 164090), (122, 147950), (220, 82045), (244, 73975), (269, 67100), (275, 65636), (305, 59180), (538, 33550), (550, 32818), (610, 29590), (671, 26900), (1076, 16775), (1100, 16409), (1220, 14795), (1342, 13450), (1345, 13420), (1525, 11836), (2684, 6725), (2690, 6710), (2959, 6100), (3050, 5918), (3355, 5380)]