19838140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{653}}^1$

素因数の和:707

約数の個数: 72

約数和(自身を含む): 50101632

約数和(自身を除く): 30263492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 653, 868, 980, 1085, 1306, 1519, 2170, 2612, 3038, 3265, 4340, 4571, 6076, 6530, 7595, 9142, 13060, 15190, 18284, 20243, 22855, 30380, 31997, 40486, 45710, 63994, 80972, 91420, 101215, 127988, 141701, 159985, 202430, 283402, 319970, 404860, 566804, 639940, 708505, 991907, 1417010, 1983814, 2834020, 3967628, 4959535, 9919070, 19838140]

約数ペア:

[(1, 19838140), (2, 9919070), (4, 4959535), (5, 3967628), (7, 2834020), (10, 1983814), (14, 1417010), (20, 991907), (28, 708505), (31, 639940), (35, 566804), (49, 404860), (62, 319970), (70, 283402), (98, 202430), (124, 159985), (140, 141701), (155, 127988), (196, 101215), (217, 91420), (245, 80972), (310, 63994), (434, 45710), (490, 40486), (620, 31997), (653, 30380), (868, 22855), (980, 20243), (1085, 18284), (1306, 15190), (1519, 13060), (2170, 9142), (2612, 7595), (3038, 6530), (3265, 6076), (4340, 4571)]