20324220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:280

約数の個数: 144

約数和(自身を含む): 68640768

約数和(自身を除く): 48316548

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 49, 60, 62, 70, 84, 93, 98, 105, 124, 140, 147, 155, 186, 196, 210, 217, 223, 245, 294, 310, 372, 420, 434, 446, 465, 490, 588, 620, 651, 669, 735, 868, 892, 930, 980, 1085, 1115, 1302, 1338, 1470, 1519, 1561, 1860, 2170, 2230, 2604, 2676, 2940, 3038, 3122, 3255, 3345, 4340, 4460, 4557, 4683, 6076, 6244, 6510, 6690, 6913, 7595, 7805, 9114, 9366, 10927, 13020, 13380, 13826, 15190, 15610, 18228, 18732, 20739, 21854, 22785, 23415, 27652, 30380, 31220, 32781, 34565, 41478, 43708, 45570, 46830, 48391, 54635, 65562, 69130, 82956, 91140, 93660, 96782, 103695, 109270, 131124, 138260, 145173, 163905, 193564, 207390, 218540, 241955, 290346, 327810, 338737, 414780, 483910, 580692, 655620, 677474, 725865, 967820, 1016211, 1354948, 1451730, 1693685, 2032422, 2903460, 3387370, 4064844, 5081055, 6774740, 10162110, 20324220]

約数ペア:

[(1, 20324220), (2, 10162110), (3, 6774740), (4, 5081055), (5, 4064844), (6, 3387370), (7, 2903460), (10, 2032422), (12, 1693685), (14, 1451730), (15, 1354948), (20, 1016211), (21, 967820), (28, 725865), (30, 677474), (31, 655620), (35, 580692), (42, 483910), (49, 414780), (60, 338737), (62, 327810), (70, 290346), (84, 241955), (93, 218540), (98, 207390), (105, 193564), (124, 163905), (140, 145173), (147, 138260), (155, 131124), (186, 109270), (196, 103695), (210, 96782), (217, 93660), (223, 91140), (245, 82956), (294, 69130), (310, 65562), (372, 54635), (420, 48391), (434, 46830), (446, 45570), (465, 43708), (490, 41478), (588, 34565), (620, 32781), (651, 31220), (669, 30380), (735, 27652), (868, 23415), (892, 22785), (930, 21854), (980, 20739), (1085, 18732), (1115, 18228), (1302, 15610), (1338, 15190), (1470, 13826), (1519, 13380), (1561, 13020), (1860, 10927), (2170, 9366), (2230, 9114), (2604, 7805), (2676, 7595), (2940, 6913), (3038, 6690), (3122, 6510), (3255, 6244), (3345, 6076), (4340, 4683), (4460, 4557)]