2499900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{641}}^1$

素因数の和:671

約数の個数: 72

約数和(自身を含む): 7801584

約数和(自身を除く): 5301684

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 641, 650, 780, 975, 1282, 1300, 1923, 1950, 2564, 3205, 3846, 3900, 6410, 7692, 8333, 9615, 12820, 16025, 16666, 19230, 24999, 32050, 33332, 38460, 41665, 48075, 49998, 64100, 83330, 96150, 99996, 124995, 166660, 192300, 208325, 249990, 416650, 499980, 624975, 833300, 1249950, 2499900]

約数ペア:

[(1, 2499900), (2, 1249950), (3, 833300), (4, 624975), (5, 499980), (6, 416650), (10, 249990), (12, 208325), (13, 192300), (15, 166660), (20, 124995), (25, 99996), (26, 96150), (30, 83330), (39, 64100), (50, 49998), (52, 48075), (60, 41665), (65, 38460), (75, 33332), (78, 32050), (100, 24999), (130, 19230), (150, 16666), (156, 16025), (195, 12820), (260, 9615), (300, 8333), (325, 7692), (390, 6410), (641, 3900), (650, 3846), (780, 3205), (975, 2564), (1282, 1950), (1300, 1923)]