15942680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:121

約数の個数: 128

約数和(自身を含む): 42577920

約数和(自身を除く): 26635240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 31, 40, 43, 46, 52, 62, 65, 86, 92, 104, 115, 124, 130, 155, 172, 184, 215, 230, 248, 260, 299, 310, 344, 403, 430, 460, 520, 559, 598, 620, 713, 806, 860, 920, 989, 1118, 1196, 1240, 1333, 1426, 1495, 1612, 1720, 1978, 2015, 2236, 2392, 2666, 2795, 2852, 2990, 3224, 3565, 3956, 4030, 4472, 4945, 5332, 5590, 5704, 5980, 6665, 7130, 7912, 8060, 9269, 9890, 10664, 11180, 11960, 12857, 13330, 14260, 16120, 17329, 18538, 19780, 22360, 25714, 26660, 28520, 30659, 34658, 37076, 39560, 46345, 51428, 53320, 61318, 64285, 69316, 74152, 86645, 92690, 102856, 122636, 128570, 138632, 153295, 173290, 185380, 245272, 257140, 306590, 346580, 370760, 398567, 514280, 613180, 693160, 797134, 1226360, 1594268, 1992835, 3188536, 3985670, 7971340, 15942680]

約数ペア:

[(1, 15942680), (2, 7971340), (4, 3985670), (5, 3188536), (8, 1992835), (10, 1594268), (13, 1226360), (20, 797134), (23, 693160), (26, 613180), (31, 514280), (40, 398567), (43, 370760), (46, 346580), (52, 306590), (62, 257140), (65, 245272), (86, 185380), (92, 173290), (104, 153295), (115, 138632), (124, 128570), (130, 122636), (155, 102856), (172, 92690), (184, 86645), (215, 74152), (230, 69316), (248, 64285), (260, 61318), (299, 53320), (310, 51428), (344, 46345), (403, 39560), (430, 37076), (460, 34658), (520, 30659), (559, 28520), (598, 26660), (620, 25714), (713, 22360), (806, 19780), (860, 18538), (920, 17329), (989, 16120), (1118, 14260), (1196, 13330), (1240, 12857), (1333, 11960), (1426, 11180), (1495, 10664), (1612, 9890), (1720, 9269), (1978, 8060), (2015, 7912), (2236, 7130), (2392, 6665), (2666, 5980), (2795, 5704), (2852, 5590), (2990, 5332), (3224, 4945), (3565, 4472), (3956, 4030)]