18371840

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{463}}^1$

素因数の和:515

約数の個数: 72

約数和(自身を含む): 45523968

約数和(自身を除く): 27152128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 463, 496, 620, 640, 926, 992, 1240, 1280, 1852, 1984, 2315, 2480, 3704, 3968, 4630, 4960, 7408, 7936, 9260, 9920, 14353, 14816, 18520, 19840, 28706, 29632, 37040, 39680, 57412, 59264, 71765, 74080, 114824, 118528, 143530, 148160, 229648, 287060, 296320, 459296, 574120, 592640, 918592, 1148240, 1837184, 2296480, 3674368, 4592960, 9185920, 18371840]

約数ペア:

[(1, 18371840), (2, 9185920), (4, 4592960), (5, 3674368), (8, 2296480), (10, 1837184), (16, 1148240), (20, 918592), (31, 592640), (32, 574120), (40, 459296), (62, 296320), (64, 287060), (80, 229648), (124, 148160), (128, 143530), (155, 118528), (160, 114824), (248, 74080), (256, 71765), (310, 59264), (320, 57412), (463, 39680), (496, 37040), (620, 29632), (640, 28706), (926, 19840), (992, 18520), (1240, 14816), (1280, 14353), (1852, 9920), (1984, 9260), (2315, 7936), (2480, 7408), (3704, 4960), (3968, 4630)]