31519740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:248

約数の個数: 144

約数和(自身を含む): 104799744

約数和(自身を除く): 73280004

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 71, 84, 98, 105, 140, 142, 147, 151, 196, 210, 213, 245, 284, 294, 302, 355, 420, 426, 453, 490, 497, 588, 604, 710, 735, 755, 852, 906, 980, 994, 1057, 1065, 1420, 1470, 1491, 1510, 1812, 1988, 2114, 2130, 2265, 2485, 2940, 2982, 3020, 3171, 3479, 4228, 4260, 4530, 4970, 5285, 5964, 6342, 6958, 7399, 7455, 9060, 9940, 10437, 10570, 10721, 12684, 13916, 14798, 14910, 15855, 17395, 20874, 21140, 21442, 22197, 29596, 29820, 31710, 32163, 34790, 36995, 41748, 42884, 44394, 52185, 53605, 63420, 64326, 69580, 73990, 75047, 88788, 104370, 107210, 110985, 128652, 147980, 150094, 160815, 208740, 214420, 221970, 225141, 300188, 321630, 375235, 443940, 450282, 525329, 643260, 750470, 900564, 1050658, 1125705, 1500940, 1575987, 2101316, 2251410, 2626645, 3151974, 4502820, 5253290, 6303948, 7879935, 10506580, 15759870, 31519740]

約数ペア:

[(1, 31519740), (2, 15759870), (3, 10506580), (4, 7879935), (5, 6303948), (6, 5253290), (7, 4502820), (10, 3151974), (12, 2626645), (14, 2251410), (15, 2101316), (20, 1575987), (21, 1500940), (28, 1125705), (30, 1050658), (35, 900564), (42, 750470), (49, 643260), (60, 525329), (70, 450282), (71, 443940), (84, 375235), (98, 321630), (105, 300188), (140, 225141), (142, 221970), (147, 214420), (151, 208740), (196, 160815), (210, 150094), (213, 147980), (245, 128652), (284, 110985), (294, 107210), (302, 104370), (355, 88788), (420, 75047), (426, 73990), (453, 69580), (490, 64326), (497, 63420), (588, 53605), (604, 52185), (710, 44394), (735, 42884), (755, 41748), (852, 36995), (906, 34790), (980, 32163), (994, 31710), (1057, 29820), (1065, 29596), (1420, 22197), (1470, 21442), (1491, 21140), (1510, 20874), (1812, 17395), (1988, 15855), (2114, 14910), (2130, 14798), (2265, 13916), (2485, 12684), (2940, 10721), (2982, 10570), (3020, 10437), (3171, 9940), (3479, 9060), (4228, 7455), (4260, 7399), (4530, 6958), (4970, 6342), (5285, 5964)]