240253720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:449

約数の個数: 128

約数和(自身を含む): 646963200

約数和(自身を除く): 406709480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 89, 124, 140, 155, 178, 217, 248, 280, 310, 311, 356, 434, 445, 620, 622, 623, 712, 868, 890, 1085, 1240, 1244, 1246, 1555, 1736, 1780, 2170, 2177, 2488, 2492, 2759, 3110, 3115, 3560, 4340, 4354, 4984, 5518, 6220, 6230, 8680, 8708, 9641, 10885, 11036, 12440, 12460, 13795, 17416, 19282, 19313, 21770, 22072, 24920, 27590, 27679, 38564, 38626, 43540, 48205, 55180, 55358, 67487, 77128, 77252, 87080, 96410, 96565, 110360, 110716, 134974, 138395, 154504, 192820, 193130, 193753, 221432, 269948, 276790, 337435, 385640, 386260, 387506, 539896, 553580, 674870, 772520, 775012, 858049, 968765, 1107160, 1349740, 1550024, 1716098, 1937530, 2699480, 3432196, 3875060, 4290245, 6006343, 6864392, 7750120, 8580490, 12012686, 17160980, 24025372, 30031715, 34321960, 48050744, 60063430, 120126860, 240253720]

約数ペア:

[(1, 240253720), (2, 120126860), (4, 60063430), (5, 48050744), (7, 34321960), (8, 30031715), (10, 24025372), (14, 17160980), (20, 12012686), (28, 8580490), (31, 7750120), (35, 6864392), (40, 6006343), (56, 4290245), (62, 3875060), (70, 3432196), (89, 2699480), (124, 1937530), (140, 1716098), (155, 1550024), (178, 1349740), (217, 1107160), (248, 968765), (280, 858049), (310, 775012), (311, 772520), (356, 674870), (434, 553580), (445, 539896), (620, 387506), (622, 386260), (623, 385640), (712, 337435), (868, 276790), (890, 269948), (1085, 221432), (1240, 193753), (1244, 193130), (1246, 192820), (1555, 154504), (1736, 138395), (1780, 134974), (2170, 110716), (2177, 110360), (2488, 96565), (2492, 96410), (2759, 87080), (3110, 77252), (3115, 77128), (3560, 67487), (4340, 55358), (4354, 55180), (4984, 48205), (5518, 43540), (6220, 38626), (6230, 38564), (8680, 27679), (8708, 27590), (9641, 24920), (10885, 22072), (11036, 21770), (12440, 19313), (12460, 19282), (13795, 17416)]