19655860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:701

約数の個数: 72

約数和(自身を含む): 49641984

約数和(自身を除く): 29986124

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, 647, 868, 980, 1085, 1294, 1519, 2170, 2588, 3038, 3235, 4340, 4529, 6076, 6470, 7595, 9058, 12940, 15190, 18116, 20057, 22645, 30380, 31703, 40114, 45290, 63406, 80228, 90580, 100285, 126812, 140399, 158515, 200570, 280798, 317030, 401140, 561596, 634060, 701995, 982793, 1403990, 1965586, 2807980, 3931172, 4913965, 9827930, 19655860]

約数ペア:

[(1, 19655860), (2, 9827930), (4, 4913965), (5, 3931172), (7, 2807980), (10, 1965586), (14, 1403990), (20, 982793), (28, 701995), (31, 634060), (35, 561596), (49, 401140), (62, 317030), (70, 280798), (98, 200570), (124, 158515), (140, 140399), (155, 126812), (196, 100285), (217, 90580), (245, 80228), (310, 63406), (434, 45290), (490, 40114), (620, 31703), (647, 30380), (868, 22645), (980, 20057), (1085, 18116), (1294, 15190), (1519, 12940), (2170, 9058), (2588, 7595), (3038, 6470), (3235, 6076), (4340, 4529)]