209530100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{499}}^1$

素因数の和:562

約数の個数: 144

約数和(自身を含む): 546840000

約数和(自身を除く): 337309900

約数列:

[1, 2, 4, 5, 10, 13, 17, 19, 20, 25, 26, 34, 38, 50, 52, 65, 68, 76, 85, 95, 100, 130, 170, 190, 221, 247, 260, 323, 325, 340, 380, 425, 442, 475, 494, 499, 646, 650, 850, 884, 950, 988, 998, 1105, 1235, 1292, 1300, 1615, 1700, 1900, 1996, 2210, 2470, 2495, 3230, 4199, 4420, 4940, 4990, 5525, 6175, 6460, 6487, 8075, 8398, 8483, 9481, 9980, 11050, 12350, 12475, 12974, 16150, 16796, 16966, 18962, 20995, 22100, 24700, 24950, 25948, 32300, 32435, 33932, 37924, 41990, 42415, 47405, 49900, 64870, 83980, 84830, 94810, 104975, 110279, 123253, 129740, 161177, 162175, 169660, 189620, 209950, 212075, 220558, 237025, 246506, 322354, 324350, 419900, 424150, 441116, 474050, 493012, 551395, 616265, 644708, 648700, 805885, 848300, 948100, 1102790, 1232530, 1611770, 2095301, 2205580, 2465060, 2756975, 3081325, 3223540, 4029425, 4190602, 5513950, 6162650, 8058850, 8381204, 10476505, 11027900, 12325300, 16117700, 20953010, 41906020, 52382525, 104765050, 209530100]

約数ペア:

[(1, 209530100), (2, 104765050), (4, 52382525), (5, 41906020), (10, 20953010), (13, 16117700), (17, 12325300), (19, 11027900), (20, 10476505), (25, 8381204), (26, 8058850), (34, 6162650), (38, 5513950), (50, 4190602), (52, 4029425), (65, 3223540), (68, 3081325), (76, 2756975), (85, 2465060), (95, 2205580), (100, 2095301), (130, 1611770), (170, 1232530), (190, 1102790), (221, 948100), (247, 848300), (260, 805885), (323, 648700), (325, 644708), (340, 616265), (380, 551395), (425, 493012), (442, 474050), (475, 441116), (494, 424150), (499, 419900), (646, 324350), (650, 322354), (850, 246506), (884, 237025), (950, 220558), (988, 212075), (998, 209950), (1105, 189620), (1235, 169660), (1292, 162175), (1300, 161177), (1615, 129740), (1700, 123253), (1900, 110279), (1996, 104975), (2210, 94810), (2470, 84830), (2495, 83980), (3230, 64870), (4199, 49900), (4420, 47405), (4940, 42415), (4990, 41990), (5525, 37924), (6175, 33932), (6460, 32435), (6487, 32300), (8075, 25948), (8398, 24950), (8483, 24700), (9481, 22100), (9980, 20995), (11050, 18962), (12350, 16966), (12475, 16796), (12974, 16150)]