20263460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:106

約数の個数: 144

約数和(自身を含む): 55157760

約数和(自身を除く): 34894300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 29, 31, 35, 46, 49, 58, 62, 70, 92, 98, 115, 116, 124, 140, 145, 155, 161, 196, 203, 217, 230, 245, 290, 310, 322, 406, 434, 460, 490, 580, 620, 644, 667, 713, 805, 812, 868, 899, 980, 1015, 1085, 1127, 1334, 1421, 1426, 1519, 1610, 1798, 2030, 2170, 2254, 2668, 2842, 2852, 3038, 3220, 3335, 3565, 3596, 4060, 4340, 4495, 4508, 4669, 4991, 5635, 5684, 6076, 6293, 6670, 7105, 7130, 7595, 8990, 9338, 9982, 11270, 12586, 13340, 14210, 14260, 15190, 17980, 18676, 19964, 20677, 22540, 23345, 24955, 25172, 28420, 30380, 31465, 32683, 34937, 41354, 44051, 46690, 49910, 62930, 65366, 69874, 82708, 88102, 93380, 99820, 103385, 125860, 130732, 139748, 144739, 163415, 174685, 176204, 206770, 220255, 289478, 326830, 349370, 413540, 440510, 578956, 653660, 698740, 723695, 881020, 1013173, 1447390, 2026346, 2894780, 4052692, 5065865, 10131730, 20263460]

約数ペア:

[(1, 20263460), (2, 10131730), (4, 5065865), (5, 4052692), (7, 2894780), (10, 2026346), (14, 1447390), (20, 1013173), (23, 881020), (28, 723695), (29, 698740), (31, 653660), (35, 578956), (46, 440510), (49, 413540), (58, 349370), (62, 326830), (70, 289478), (92, 220255), (98, 206770), (115, 176204), (116, 174685), (124, 163415), (140, 144739), (145, 139748), (155, 130732), (161, 125860), (196, 103385), (203, 99820), (217, 93380), (230, 88102), (245, 82708), (290, 69874), (310, 65366), (322, 62930), (406, 49910), (434, 46690), (460, 44051), (490, 41354), (580, 34937), (620, 32683), (644, 31465), (667, 30380), (713, 28420), (805, 25172), (812, 24955), (868, 23345), (899, 22540), (980, 20677), (1015, 19964), (1085, 18676), (1127, 17980), (1334, 15190), (1421, 14260), (1426, 14210), (1519, 13340), (1610, 12586), (1798, 11270), (2030, 9982), (2170, 9338), (2254, 8990), (2668, 7595), (2842, 7130), (2852, 7105), (3038, 6670), (3220, 6293), (3335, 6076), (3565, 5684), (3596, 5635), (4060, 4991), (4340, 4669), (4495, 4508)]