18992480

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1$

素因数の和:448

約数の個数: 96

約数和(自身を含む): 50549184

約数和(自身を除く): 31556704

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 65, 80, 92, 104, 115, 130, 160, 184, 208, 230, 260, 299, 368, 397, 416, 460, 520, 598, 736, 794, 920, 1040, 1196, 1495, 1588, 1840, 1985, 2080, 2392, 2990, 3176, 3680, 3970, 4784, 5161, 5980, 6352, 7940, 9131, 9568, 10322, 11960, 12704, 15880, 18262, 20644, 23920, 25805, 31760, 36524, 41288, 45655, 47840, 51610, 63520, 73048, 82576, 91310, 103220, 118703, 146096, 165152, 182620, 206440, 237406, 292192, 365240, 412880, 474812, 593515, 730480, 825760, 949624, 1187030, 1460960, 1899248, 2374060, 3798496, 4748120, 9496240, 18992480]

約数ペア:

[(1, 18992480), (2, 9496240), (4, 4748120), (5, 3798496), (8, 2374060), (10, 1899248), (13, 1460960), (16, 1187030), (20, 949624), (23, 825760), (26, 730480), (32, 593515), (40, 474812), (46, 412880), (52, 365240), (65, 292192), (80, 237406), (92, 206440), (104, 182620), (115, 165152), (130, 146096), (160, 118703), (184, 103220), (208, 91310), (230, 82576), (260, 73048), (299, 63520), (368, 51610), (397, 47840), (416, 45655), (460, 41288), (520, 36524), (598, 31760), (736, 25805), (794, 23920), (920, 20644), (1040, 18262), (1196, 15880), (1495, 12704), (1588, 11960), (1840, 10322), (1985, 9568), (2080, 9131), (2392, 7940), (2990, 6352), (3176, 5980), (3680, 5161), (3970, 4784)]