291207440

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1\times {\mathrm{397}}^1$

素因数の和:636

約数の個数: 80

約数和(自身を含む): 695567088

約数和(自身を除く): 404359648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 173, 212, 265, 346, 397, 424, 530, 692, 794, 848, 865, 1060, 1384, 1588, 1730, 1985, 2120, 2768, 3176, 3460, 3970, 4240, 6352, 6920, 7940, 9169, 13840, 15880, 18338, 21041, 31760, 36676, 42082, 45845, 68681, 73352, 84164, 91690, 105205, 137362, 146704, 168328, 183380, 210410, 274724, 336656, 343405, 366760, 420820, 549448, 686810, 733520, 841640, 1098896, 1373620, 1683280, 2747240, 3640093, 5494480, 7280186, 14560372, 18200465, 29120744, 36400930, 58241488, 72801860, 145603720, 291207440]

約数ペア:

[(1, 291207440), (2, 145603720), (4, 72801860), (5, 58241488), (8, 36400930), (10, 29120744), (16, 18200465), (20, 14560372), (40, 7280186), (53, 5494480), (80, 3640093), (106, 2747240), (173, 1683280), (212, 1373620), (265, 1098896), (346, 841640), (397, 733520), (424, 686810), (530, 549448), (692, 420820), (794, 366760), (848, 343405), (865, 336656), (1060, 274724), (1384, 210410), (1588, 183380), (1730, 168328), (1985, 146704), (2120, 137362), (2768, 105205), (3176, 91690), (3460, 84164), (3970, 73352), (4240, 68681), (6352, 45845), (6920, 42082), (7940, 36676), (9169, 31760), (13840, 21041), (15880, 18338)]