19953440

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:262

約数の個数: 96

約数和(自身を含む): 52009776

約数和(自身を除く): 32056336

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 53, 65, 80, 104, 106, 130, 160, 181, 208, 212, 260, 265, 362, 416, 424, 520, 530, 689, 724, 848, 905, 1040, 1060, 1378, 1448, 1696, 1810, 2080, 2120, 2353, 2756, 2896, 3445, 3620, 4240, 4706, 5512, 5792, 6890, 7240, 8480, 9412, 9593, 11024, 11765, 13780, 14480, 18824, 19186, 22048, 23530, 27560, 28960, 37648, 38372, 47060, 47965, 55120, 75296, 76744, 94120, 95930, 110240, 124709, 153488, 188240, 191860, 249418, 306976, 376480, 383720, 498836, 623545, 767440, 997672, 1247090, 1534880, 1995344, 2494180, 3990688, 4988360, 9976720, 19953440]

約数ペア:

[(1, 19953440), (2, 9976720), (4, 4988360), (5, 3990688), (8, 2494180), (10, 1995344), (13, 1534880), (16, 1247090), (20, 997672), (26, 767440), (32, 623545), (40, 498836), (52, 383720), (53, 376480), (65, 306976), (80, 249418), (104, 191860), (106, 188240), (130, 153488), (160, 124709), (181, 110240), (208, 95930), (212, 94120), (260, 76744), (265, 75296), (362, 55120), (416, 47965), (424, 47060), (520, 38372), (530, 37648), (689, 28960), (724, 27560), (848, 23530), (905, 22048), (1040, 19186), (1060, 18824), (1378, 14480), (1448, 13780), (1696, 11765), (1810, 11024), (2080, 9593), (2120, 9412), (2353, 8480), (2756, 7240), (2896, 6890), (3445, 5792), (3620, 5512), (4240, 4706)]